EP2593754B1 - Procédé de détection d'une position de commutation d'un dispositif de commutation - Google Patents

Procédé de détection d'une position de commutation d'un dispositif de commutation Download PDF

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Publication number
EP2593754B1
EP2593754B1 EP11748596.1A EP11748596A EP2593754B1 EP 2593754 B1 EP2593754 B1 EP 2593754B1 EP 11748596 A EP11748596 A EP 11748596A EP 2593754 B1 EP2593754 B1 EP 2593754B1
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Prior art keywords
measuring
switching
value
diff
vcc
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EP11748596.1A
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German (de)
English (en)
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EP2593754A1 (fr
Inventor
Martin Wagner
Rainer BÜHLMANN
Werner Thormann
Sven Kober
Meinolf Kathol
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Leopold Kostal GmbH and Co KG
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Leopold Kostal GmbH and Co KG
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1446—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means controlled by mechanically actuated switches
    • B60Q1/1453—Hand actuated switches
    • B60Q1/1461—Multifunction switches for dimming headlights and controlling additional devices, e.g. for controlling direction indicating lights
    • B60Q1/1469—Multifunction switches for dimming headlights and controlling additional devices, e.g. for controlling direction indicating lights controlled by or attached to a single lever, e.g. steering column stalk switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
    • G01D5/252—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/01—Miscellaneous combined with other elements on the same substrate
    • H01H2239/012—Decoding impedances

Definitions

  • the invention relates to a method for detecting a switching position of a switching device comprising at least one switching element, wherein the respective switching position of the switching element is represented by a value of a physical measurement of the switching element, which is supplied via an A / D converter input to a microprocessor for evaluation.
  • Such switching devices are used for example in motor vehicles to control various vehicle functions. So it is e.g. customary to integrate a plurality of individual switch comprehensive switching device in a so-called steering column module for a motor vehicle.
  • the individual switches are provided for example for controlling the windscreen wiper and washer, the turn signals and the high beam switching of the vehicle.
  • the DE 10 2008 044 115 A1 shows method for detecting a switch position of switches in a plurality of switching elements, wherein a single-wire bus system is used, in which the switching elements are arranged in a kind of voltage divider circuit connected in series.
  • the DE 10 2008 007 650 A1 shows method for detecting a switch position of two mechanically coupled to each other switching elements in their intended Operating positions are actuated simultaneously and in the same direction.
  • Prescribed fixed setpoint values are assigned to these two switching states, with which actual values of the measured voltage are compared in order to identify the respectively existing switching state.
  • An error in the mechanical part of the Heidelberganordung is here recognized by the fact that one of the two switches open and the other is closed at the same time. This leads to actual values of the measured voltage, which are also assigned (other) predetermined fixed setpoints. However, these values indicate the mechanical error in this case.
  • the single FIGURE shows an equivalent circuit diagram of a switching device provided for carrying out the method according to the invention, which is a steering column module comprising a plurality of switching elements for a motor vehicle, as described above.
  • the switching elements are assigned to the said vehicle functions.
  • Each of the switching elements SE1, SE2 (only two switching elements are shown here by way of example, wherein the actual design can of course have more) comprises a measuring resistor M1, M2, which is connected with its one terminal to a ground potential Gnd.
  • the other terminal of the measuring resistor M1, M2 is in each switching position via one of these switching position respectively associated switching resistance S11, S12, S13; S21, S22, S23, S24 are connected to a constant supply voltage Vcc.
  • the number of switching resistors S11, S12, S13 respectively present in the switching elements SE1., SE2; S21, S22, S23, S24 depends on the number of switching positions to be realized with the respective switching element Se1 or SE2, in this example therefore 3 switching positions for SE1 and 4 switching positions for SE2.
  • the falling over the measuring resistor M1, M2 measuring voltage U M1 , U M2 is fed via an A / D converter input A / D 1, A / D 2 a microprocessor ⁇ C for evaluation.
  • the resistance branches of the switching elements SE1, SE2 of the switching device assigned to the different functions are connected in parallel with each other, and with their respective selected switching position switching resistors (in the example shown S11, S23) by a common electrical line with the Supply voltage Vcc connected.
  • the switching positions assigned to the respective switching positions S11, S12, S13; S21, S22, S23, S24 and the applied supply voltage Vcc which in the present example is also detected by measurement via an A / D converter input A / D 3 of the microprocessor .mu.C with its actual value U.sub.cccc , predetermined, fixed setpoint values result.
  • Values for the respective switching positions of the switching elements SE1, SE2 respectively associated voltage drops across the measuring resistors M1, M2, that is, the measuring voltages U M1 , U M2 .
  • Such a validation of a shift position detection makes the inventive method for detecting a switching position of at least one switching element comprehensive switching device, wherein the respective switching position of the switching element is represented by a value of a physical measurement of the switching element, which supplied via an A / D converter input to a microprocessor for evaluation is, with the method steps specified in claim 1.
  • the physical measured variables mentioned in this claim are, for example, voltage values or current intensity values
  • the nominal values of the components determining the measured variable are resistance values, capacitance values or inductance values
  • the input variables of the switching device are supply voltage values or input current intensity values.
  • the physical comparison quantity relates, for example, to one of these specified values, which can be calculated as a derived value from other (measured) values, given as a nominal value or can be recorded as an actual value by a current measurement.
  • triggering of the associated vehicle function is preferably prevented as faulty.
  • This simple variant of the method according to the invention aims at the detection of errors that can occur, in particular, in the common supply lines which affect all resistance branches equally. Such errors that occur only in a single of the resistance branches are to be detected with a development of the method according to the invention, which also allows compensation of these errors, so that an improved availability of the switching device is given.
  • the voltage difference value U diff to the applied supply voltage U Vcc is always formed with the largest of the calculated branch voltage drops U1, U2, since this determines the voltage level of all branches by the parallel connection of the resistance branches. Lower voltage drops in the other branches must therefore have been caused by interference resistance within these branches. In the pathological case of only one branch of resistance is the method last described with the simpler one described above.
  • the branch voltage drops U1, U2 determined in the penultimate step of the last-described sequence of method steps are scaled up to the design or measured supply voltage Vcc or U Vcc .
  • the freely definable difference threshold value U diff-s can also be used merely for signaling an error case without intervening in the function.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement Of Current Or Voltage (AREA)

Claims (7)

  1. Procédé de détection d'une position de commutation d'un dispositif de commutation comprenant au moins un élément de commutation (SE1, SE2), sachant que chaque position de commutation de l'élément de commutation (SE1, SE2) est représentée par une valeur d'une grandeur de mesure physique (UM1, UM2) qui, pour l'évaluation, est conduite à un microprocesseur (µC), par l'intermédiaire d'une entrée de convertisseur analogique-numérique (A/D), ledit procédé comprenant les étapes suivantes :
    - Identification de la position de commutation par comparaison de la valeur de la grandeur de mesure physique (UM1, UM2) saisie avec des valeurs de consigne fixes, prédéterminées pour les différentes positions de commutation,
    - calcul d'une valeur dérivée d'une grandeur de comparaison physique (Uges) pour chacune des positions de commutation identifiées, au moyen d'un modèle physique, basé sur les valeurs nominales des éléments (M1, M2, S11, S12, S13, S21, S22, S23, S24) déterminant les valeurs de la grandeur de mesure physique (UM1, UM2), en utilisant la valeur réelle de grandeur de mesure physique (UM1, UM2) détectée,
    - formation d'une valeur de différence (UDiff) entre la valeur dérivée de la grandeur de comparaison physique (Uges) et la valeur nominale, prédéterminée (Vcc) ou une valeur réelle actuellement détectée (UVcc) de la grandeur de comparaison physique,
    - comparaison de la valeur de différence (UDiff) avec une valeur de seuil de différence (UDiff-S) et qualification de la présente détection de positions de commutation comme étant erronée, quand la valeur de seuil de différence (UDiff-S) est dépassée par la valeur de différence (UDiff). actuelle.
  2. Procédé selon la revendication 1, caractérisé en ce que, lors d'une qualification de la présente détection de positions de commutation comme étant erronée, le déclenchement de la fonction du véhicule automobile y associée est empêchée.
  3. Procédé selon revendication 1 ou 2, caractérisé en ce que l'élément de commutation (SE1, SE2) du dispositif de commutation au moins prévu est formé par une résistance de mesure (M1, M2), qui, d'une part, est reliée à un potentiel de masse (Gnd) et, d'autre part, peut être raccordée, dans chaque position de commutation, à une tension d'alimentation constante (Vcc), par l'intermédiaire d'une résistance de commutation (S11, S12, S13 ; S21, S22, S23, S24) associée à la position de commutation respective, et que la grandeur de mesure physique est la tension de mesure sur la résistance de mesure, dans la position de commutation respective.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de commutation comprend au moins deux éléments de commutation (SE1, SE2) qui comprennent chacun une branche à résistance avec une résistance de mesure (M1, M2) et au moins deux résistances de commutation (S11, S12, S13 ; S21, S22, S23, S24), sachant que l'un des raccords de la résistance de mesure (M1, M2) est relié à un potentiel de masse (Gnd) et que l'autre raccord est relié, dans chaque position de commutation, à une tension d'alimentation constante (Vcc), par l'intermédiaire d'une résistance de commutation (S11, S12, S13 ; S21, S22, S23, S24) associée à la position de commutation respective, les branches à résistance étant commutées en parallèle les unes par rapport aux autres, et raccordées, d'une part, au potentiel de masse (Gnd) et, d'autre part, à la tension d'alimentation (Vcc), par l'intermédiaire de conduites électriques communes, et sachant que les tensions de mesures (UM1, UM2), sur les résistances de mesure (M1, M2) sont conduites, aux fins d'évaluation, à un microprocesseur (µC), par l'intermédiaire d'entrées d'un convertisseur analogique-numérique (A/D1, AD2), ledit procédé comprenant les étapes suivantes :
    - Saisie des tensions de mesure (UM1, UM2) dans les branches à résistance des éléments de commutation (SE1, SE2) associés aux différentes fonctions
    - identification des positions de commutation respectives par comparaison des valeurs réelles des tensions de mesure détectées (UM1, UM2) avec des valeurs de consigne fixes, prédéterminées pour les différentes positions de commutation,
    - calcul des courants (I1, I2) s'écoulant dans les branches à résistance respectives, à partir des tensions de mesure détectées (UM1, UM2) et des valeurs nominales des résistances de mesure (M1, M2),
    - addition des courants (I1, I2) s'écoulant dans les branches à résistance respectives et du courant total, commun (Iges) traversant toutes les branches à résistance parallèles,
    - calcul de la résistance totale (Rges), formée, par la commutation en parallèle de toutes les branche à résistances, entre le potentiel de masse (Gnd) et la tension d'alimentation (Vcc), à partir des valeurs nominales des résistances de mesure (M1, M2), et des résistances de commutation (S11, S12, S13 ; S21, S22, S23, S24) effectives dans les positions de commutation identifiées,
    - calcul de la tension totale (Uges) sur la commutation en parallèle de toutes les branches à résistance à partir des valeurs calculées du courant total (Iges) et de la résistance totale (Rges),
    - formation d'une valeur de différence (UDiff) entre la tension totale (Uges) calculée et la valeur prédéterminée ou mesurée de la tension d'alimentation appliquée (Vcc ; UVcc),
    - comparaison de la valeur de différence de tension (UDiff) avec une valeur de seuil de différence (UDiff-S) et qualification de la présente détection de positions de commutation comme étant erronée, quand la valeur de seuil de différence (UDiff-S) est dépassée par la valeur de différence (UDiff).
  5. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de commutation comprend au moins deux éléments de commutation (SE1, SE2) qui comprennent chacun une branche à résistance avec une résistance de mesure (M1, M2) et au moins deux résistances de commutation (S11, S12, S13 ; S21, S22, S23, S24), sachant que l'un des raccords de la résistance de mesure (M1, M2) est relié à un potentiel de masse (Gnd) et que l'autre raccord est relié, dans chaque position de commutation, à une tension d'alimentation constante (Vcc), par l'intermédiaire d'une résistance de commutation (S11, S12, S13 ; S21, S22, S23, S24) associée à la position de commutation respective, les branche à résistances à résistance étant commutées en parallèle les unes par rapport aux autres, et raccordées, d'une part, au potentiel de masse (Gnd) et, d'autre part, à la tension d'alimentation (Vcc), par l'intermédiaire de conduites électriques communes, et sachant que les tensions de mesure (UM1, UM2) sur les résistances de mesure (M1, M2) sont conduites à un microprocesseur (µC), par l'intermédiaire d'entrées d'un convertisseur analogique-numérique (A/D 1, A/D 2), pour l'évaluation, ledit procédé comprenant les étapes suivantes :
    - Saisie des tensions de mesure (UM1, UM2) dans les branches à résistance des éléments de commutation (SE1, SE2) associés aux différentes fonctions
    - identification des positions de commutation respectives par comparaison des valeurs réelles des tensions de mesure (UM1, UM2) saisies avec des valeurs de consigne fixes, prédéterminées pour les différentes positions de commutation,
    - calcul des courants ((I1, I2) dans les branches à résistance respectives, à partir des valeurs de tension de mesure (UM1, UM2) détectées et les valeurs nominales respectives des résistances de mesure (M1, M2),
    - calcul des tensions (U1, U2) sur les branches à résistance respectives, à partir des courants (I1, I2) dans les branches à résistance respectives et les valeurs nominales des résistances de mesure (M1, M2) des résistances de commutation (S11, S12, S13 ; S21, S22, S23, S24) efficaces dans les positions de commutation identifiées,
    - formation d'une valeur de différence de tension (UDiff) entre la plus grande (Umax) des tensions calculées sur les branches à résistance et la valeur prédéterminée ou mesurée de la tension d'alimentation appliquée (Vcc ; UVcc),
    - comparaison de valeur de différence de tension (UDiff) avec une valeur de seuil de différence (UDiff-S) et qualification de la présente détection de positions de commutation comme étant erronée, quand la valeur de seuil de différence (UDiff-S) est dépassée par la valeur de différence de tension (UDiff) actuelle.
  6. Procédé selon la revendication 5, caractérisé en ce que d'autres étapes sont effectuées quand la présente détection de position de commutation est qualifiée d'erronée, lesdites autres étapes étant les suivantes:
    - Calcul d'un facteur de mise à l'échelle (SF1, SF2) respectif pour chaque branche à résistance en tant que quotient de la valeur prédéterminée ou mesurée de la tension d'alimentation appliquée (Vcc ; Uvcc) et de la tension respective des branches à résistance (U1, U2),
    - formation de valeurs de mesure de tension mises à l'échelle (UM1-skal, UM2-skal) en tant que produit des tensions de mesure détectées (UM1, UM2) avec le facteur de mise à l'échelle (SF1, SF2) calculé pour la branche à résistance respective,
    - nouvelle identification des positions de commutation respectives par comparaison des valeurs de tensions de mesure mises à l'échelle (UM1 skal, UM2 skal) avec les valeurs de consigne fixes prédéterminées pour les différentes positions de commutation.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que les étapes du procédé sont réitérées en boucle continue.
EP11748596.1A 2010-07-13 2011-07-11 Procédé de détection d'une position de commutation d'un dispositif de commutation Active EP2593754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010026919 DE102010026919A1 (de) 2010-07-13 2010-07-13 Verfahren zur Erfassung einer Schaltstellung einer Schalteinrichtung
PCT/EP2011/061780 WO2012007436A1 (fr) 2010-07-13 2011-07-11 Procédé de détection d'une position de commutation d'un dispositif de commutation

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EP2593754A1 EP2593754A1 (fr) 2013-05-22
EP2593754B1 true EP2593754B1 (fr) 2016-05-25

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US (1) US9250294B2 (fr)
EP (1) EP2593754B1 (fr)
CN (1) CN102985794B (fr)
DE (1) DE102010026919A1 (fr)
ES (1) ES2581664T3 (fr)
WO (1) WO2012007436A1 (fr)

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ES2581664T3 (es) 2016-09-06
US9250294B2 (en) 2016-02-02
EP2593754A1 (fr) 2013-05-22
CN102985794A (zh) 2013-03-20
US20130106200A1 (en) 2013-05-02
WO2012007436A1 (fr) 2012-01-19
DE102010026919A1 (de) 2012-01-19

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